Caloric circuit-breaker.



e. e. WOODW ORTH. GALORIG OIROUIT BREAKER.

APPLICATION FILED MAR. 9, 1909.

Patented Sept. 21, 1909 cuit-breakers'and to render them more posi-- .Toall it my am ra:

beemployedv r A representsfla suitable casing providedl CHARLES C.FVOODWQBTH, OF PORTLANQ', OREGON.

CALORIC CL'BLCUIT-BREAKER.

Specification .of Letters Patent.

Patented Sept. '21, 1909.

lppiication'filed March 9, 1909. Serial No. 482,239.

Be it known that 1, CHARLES C. W'oonwon'rn, .a citizen of the UnitedStates, and a resident of Portland, in the county of Multnomah and Stateof Oregon, have invented a new and useful Improvement in CaloricCircuit-Breakers, of which thejfollowing is a specification.

My invention relates to circuit-breakers of the type in which theexpansionof a wire traversed by a portion of the main line currentcontrols the opening of such main line erated devices.

[without having recourseto mechanically opand simplify theico nstructionof caloric ci-rhereinafter set forth.

form a part of this specification, Figure 1 is;

an elevation partly in section of one embodiment of my invention andFig. 2 is a planview .of one form of arc-breaker that may with bindingposts '13 B for connecting the f circuit-breaker in the main line. I a

which 1) is stationary and 'F is movable,j which are connected with themain l ne terminals. The stationary contact member D1 material.

G is a tube provided with spring c'li s adapted to embrace the lower 1art 0'' thef contact member F. The spring 1s secured in any suitablemanner to the tube G and to the upperportibn of the contact member Ff sothat when, by means of the arm J extending through-a slot in the casing,the members 1* and D are placed in contact, the spring I tendstoseparate the the line circuit.

same and thereby open nected l?! the flexible conductor 6 with the L isa latch arranged to hold the member F in contact with the member D bytaking in the her F.

O 0 represent a suitable thermally actuated cevice arranged so that thepassage ofia groove near the upper end of the .mexnj predeterminedamount of current ,there-g through will cause suflicient expansion to'effect the withdrawal of the latch and thereby open the circuit. In thepresent instance the said thermally actuated device consists of wiressuitably mounted in the casing and connected by the cords W to the cordV which in turn is connected to the toggle leverM, v nd tends to holdthe same inthe position shown.

Asuitable resilient mem ber such as the spring N is connected to saidtoggle-lever and tends to move the same upwardly, so that the saidtoggleis balanced between the action of said spring and the cords connectingit with the thermally actuated device.

While I may employ various forms of connections between thetoggle, whichis operated by the expansion of the thermally actuated device (land thelatch which holds the p I t g members D and in contact, I have shown Inthe drawings which accompany and n the accompanyingdrawings anarrangement of link connections, the same consisting of-the link 1pivoted to the latch and to the link 2;, which in turn is pivoted to thelin'kfi, the upper end ofwhich is connected with one farm of ,the toggleM. A spring 4;

is fixed to the link 3 and serves to hold the free end of the link 2against said link 3.

I The funotinn. of this com ensating-spring is D and F are two contactmembers, of i to ,permit aslight later-a movement of the latch fL xtothe left when the contact between D and F .is closed and then to forcesaid latch to the rightand into the groove in the upper part .QT' themember F when the same has reached its uppermost position.

' represents a su tably graduated scale wh ch may be placed on theoutside of the casing P is a sliding 'contactmember carrying a pointercoiiperatingwith said scale. The sliding contact member regulates, thelength of the thermally actuated device." 95

O which is in circuit, in a manner which will be obvious;

A. flexible conductor a was the la't h with one side of the conductor {3and'the' regulator .P which makes sliding 'contactjioo with the otherside of said conductor is can ember 1. throaghtheflsprin clips 7H- Asuitable form of arckbreailrerfwhich may be employed in conn ction withthe caloric '105 circuit-breaker abote described consists of e d sk S ofmica or othe s e material sass-119a to the rocker C, which in turn isivo ed to the upport Ufare stqps governing the position of 110 saidrocker and Y is a pin cooperz-iifing with the projections T T to actuatesaid rocker in manner which will be obvious.

The operation is as follows: The regulator 55 P is Set so that a certainloml may he carried .l iout actuating; ihe circuit breaker, the

member i is plzu-ezl in. contact with the memher I) and the main linethereby (JlOSQfl. A

certain very small fraction oi the main line 10 current willpass'through the loch L, condoctor a, a portion or the 37 actuated 5device 0 and back to the roof no by Way l ofthe conductor 2}. as thecurrent rises shoves predetermined value, this value -beioogdetermmed bythe position the regulater 1, the expo-nsoil? the thermally acl tnatedldevi e'fi enab s em: I

stroy the of i c 1 it, throu h the link ism to the l 23 latch themovable contact member l whereupon the spring rlraws the latter downwardand opens the main line. vii: tee of the small mass of the tl'iermsllyuctu- :ited clm ice Q, the latter almost immediately 25 cools andresumes its normal position thereby drawing thevtoggle against thetension the spring N to nouns-l nosition so tha the latch L extends intothe path oi the conto ct member F. 'lhe latter now raised by the arm Jto close the circuit, and held.

in position by the latch.

rub

' tions may be made in, the details of (he anparatus above described endin the circiiit arrangements therein n ilhont dope the spirit of myinvention.

1 claim: 1. In a caloric circuit-lweaker, the combination with a linecircuit of :1 stationery 40 contact member and a movable contact m mberconnected with soirl, .i

.u, whereby said members m 243 he pie. erl. i tact to close saidcircuit, moons :5"; said members in contact, means for se 1 ing sairlmembers thermally actuated controlling the separation thereof antl meansfor extinguishing the arc prodncc by sep- Mating said members.

2. In a caloric circuit-brenker the combination with a line circuit of Lstationery contact member 231C318, movable contact men:- ber connected.with circuit, mi -es whereby said members may be contact to close said.circuit,- means for hold' said members in content; moons rating saidmembers, thermo" mmo. means for controlling; the separation thereof.

and means operated by said movable contact member for extinguishing theare produced by separating said members In caloric circuit-breaker; thecomhi no tion with a line circuit of a stationary contact member and amovable contact member connected with said circuit, a thermally scvtun-ted device for controlling the separation l ticnory cont. men.

, tact member and movable, conta t able member in Contact with thestationary member o toggle-lever, links connecting Si l-'31 latch andtoggle-lever, and s compensating spring cooperating with. two members ofsaid link connection.

:1, caloric circuit breaker, the combination with i of :1 stationaryconmember connected with sahlcircnit, means whereby said members may beplaced in co to hold or said members, the; controlling the arrimgorl tobe acuizizlecl i g said A. tact membei. ml member oi insole. i'ierizilcarried by said rocker to be interposed between said contact m hers toextinguish the are when said memiers are sepi. alter L In it coloi iccircuit breaker v a casing inclosing 2. stationary on :t member n l 3Lmovable member can pin, moons whereby said members may be pl ced, inotoot, 111 ,ns for her is ,m n )(EIS in tact means for separating; sairlmom? thermally acts ed control the separation thereof, o rocker pivotedLO irl and provided with two projecone arranged in the ath oi": suhl pinwlmn said mom, s are in contact owl the .er in the path of said pin whensziaicl, memsre scpzirsfioco and a member of insw in; material carriedby said rocker and nged to interposed between said contact members toextinguish the are when said members are se s liQl.

Tu In it caloric c provided with two sl a casing e: of. mo cable connarm progectmg throi g'h one *chc o movable tact member cl: slotsconnected with said circuit, means :i movable contact member saidniembei's may be placed in contact to l spring member and said thermallyactuated close said circuit, means for holding said device. a v vmembers in=contact, means for separating In testimony whereof, I havehereunto said members, a thermally actuated Wire consubscribed my namethis 3rd day of March 5 trolling the-separati0n of said mgmbers, a 1909.

to de-lever, links connecting sai to le- K lei e r with said means forholding said fi m- CHARLES WQODVYORTH' 17ers in contact, a springmember, and means Witnessesz' whereby sai d toggle lever is held inequilib- EVA FORTMILLER, 0 rium between the opposing' actions of said J.G. BRYANT.

